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Published byῬαχήλ Ιωάννου Modified over 6 years ago
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Kinetic vs Potential Classify the following as either potential or kinetic energy. Chemical bonds in sugar Potential Rolling bowling ball Kinetic Stretched rubber band Pie perched on a peak
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KE & PE Calculations What is the kinetic energy of a 3 kg ball that is rolling at 2 m/s? 𝐾𝐸= 1 2 𝑚 𝑣 2 = 1 2 ∗3∗ 2 2 =6𝐽 What is the potential energy of a 5 kg brick on a 20 m high platform? 𝑃𝐸=𝑚𝑔ℎ=5∗9.81∗20=981𝐽 A bell that weighs 200 N hangs in a 100 m tall tower. Calculate the bell’s potential energy. 𝑃𝐸=𝑤ℎ=200∗100=20000𝐽 A car is traveling with a velocity of 40 m/s and has a mass of 1200 kg, what’s the car kinetic energy? 𝐾𝐸= 1 2 𝑚 𝑣 2 = 1 2 ∗1200∗ 40 2 =960000𝐽
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Forms of Energy Energy that travels on electromagnetic waves
Energy stored in a charged particle within an electric field Energy possessed by an object or system due to the movement of particles within the object or the system Energy that is associated with vibrations of matter Energy possessed by an object due to its motion or its position Energy stored in the bonds of atoms and molecules Radiant light and heat from the Sun harnessed Type of energy generated in nuclear reactions Chemical Energy Nuclear Energy Mechanical Energy Radiant Energy Thermal Energy Sound Energy Electrical Energy Solar Energy
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Energy Transfer Diagram
What’s the energy input? Electrical Energy What’s the energy output? Light Energy
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Sankey Diagrams Add the missing figures to the diagrams below. 15 60 25
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